Can. 1040 Those aVected by any impediment, whether
perpetual, which is called an irregularity, or simple, are prevented from
receiving orders. The only impediments incurred, however, are those contained
in the following canons.

Can. 1041 The following are irregular for
receiving orders:

1/ a person who labors under some form of amentia or
other psychic illness due to which, after experts have been consulted, he is
judged unqualified to fulfill the ministry properly;

2/ a person who has committed the delict of
apostasy, heresy, or schism;

3/ a person who has attempted marriage, even only
civilly, while either impeded personally from entering marriage by a
matrimonial bond, sacred orders, or a public perpetual vow of chastity, or with
a woman bound by a valid marriage or restricted by the same type of vow;

4/ a person who has committed voluntary homicide or
procured a completed abortion and all those who positively cooperated in
either;

5/ a person who has mutilated himself or another
gravely and maliciously or who has attempted suicide;

6/ a person who has placed an act of orders reserved
to those in the order of episcopate or presbyterate while either lacking that
order or prohibited from its exercise by some declared or imposed canonical
penalty.

Can. 1042 The following are simply impeded from
receiving orders:

1/ a man who has a wife, unless he is legitimately
destined to the permanent diaconate;

2/ a person who exercises an office or
administration forbidden to clerics according to the norm of cann.
⇒ 285 and ⇒ 286 for which he must
render an account, until he becomes free by having relinquished the office or
administration and rendered the account;

3/ a neophyte unless he has been proven sufficiently
in the judgment of the ordinary.

Can. 1043 If the Christian faithful are aware of
impediments to sacred orders, they are obliged to reveal them to the ordinary
or pastor before the ordination.

Can. 1044 §1. The following are irregular for the
exercise of orders received:

1/ a person who has received orders illegitimately
while aVected by an irregularity to receive them;

2/ a person who has committed a delict mentioned in
⇒ can. 1041, n. 2, if the delict is public;

1/ a person who has received orders illegitimately
while prevented by an impediment from receiving them;

2/ a person who is aVected by amentia or some other
psychic illness mentioned in ⇒ can. 1041, n. 1 until the
ordinary, after consulting an expert, permits the exercise of the order.

Can. 1045 Ignorance of the irregularities and
impediments does not exempt from them.

Can. 1046 Irregularities and impediments are
multiplied if they arise from different causes. They are not multiplied,
however, if they arise from the repetition of the same cause unless it is a
question of the irregularity for voluntary homicide or for having procured a
completed abortion.

Can. 1047 §1. Dispensation from all irregularities
is reserved to the Apostolic See alone if the fact on which they are based has
been brought to the judicial forum.

§2. Dispensation from the following irregularities
and impediments to receive orders is also reserved to the Apostolic See:

1/ irregularities from the public delicts mentioned
in ⇒ can. 1041, nn. 2 and 3;

2/ the irregularity from the delict mentioned in
⇒ can. 1041, n. 4, whether public or occult;

§3. Dispensation in public cases from the
irregularities from exercising an order received mentioned in
⇒ can. 1041, n. 3, and even in occult cases from the
irregularities mentioned in ⇒ can. 1041, n. 4 is also
reserved to the Apostolic See.

§4. An ordinary is able to dispense from
irregularities and impediments not reserved to the Holy See.

Can. 1048 In more urgent occult cases, if the
ordinary or, when it concerns the irregularities mentioned in
⇒ can. 1041, nn. 3 and 4, the Penitentiary cannot be
approached and if there is imminent danger of grave harm or infamy, a person impeded
by an irregularity from exercising an order can exercise it, but without
prejudice to the obligation which remains of making recourse as soon as
possible to the ordinary or the Penitentiary, omitting the name and through a
confessor.

Can. 1049 §1. Petitions to obtain a dispensation
from irregularities or impediments must indicate all the irregularities and
impediments. Nevertheless, a general dispensation is valid even for those
omitted in good faith, except for the irregularities mentioned in
⇒ can. 1041, n. 4, and for others brought to the
judicial forum, but not for those omitted in bad faith.

§2. If it is a question of the irregularity from
voluntary homicide or a procured abortion, the number of the delicts also must
be mentioned for the validity of the dispensation.

§3. A general dispensation from irregularities and
impediments to receive orders is valid for all the orders.